PD IEC/TR 61857-2 is the second part of the IEC 61857 multi-series that discusses thermal evaluation procedures for electrical insulation systems.
PD IEC/TR 61857-2 gives guidelines to identify the appropriate test method to be used for the evaluation of a proposed Electrical Insulation System (EIS). Some of the standards are for evaluation and classification of the EIS, while other standards identify the appropriate method to evaluate single or multi-factor stresses of a proposed or of an established EIS.
PD IEC/TR 61857-2 is applicable to existing or proposed EIS used in electrotechnical products across a wide range of operating voltages of IEC Standards. The report takes care to select the appropriate standard based on construction and intended operating conditions.
PD IEC/TR 61857-2 on electrical insulation systems is relevant to:
An electrical insulation system is comprised of a unique combination of materials that have been verified for chemical compatibility when used at certain maximum temperatures. Accelerated ageing of an electrical insulation system is intended to evaluate the thermal classification of the EIS.
PD IEC/TR 61857-2 provides terms and definitions, guidelines on EIS test methods for the design and development of the scope of work for the EIS evaluation, test objects, and classification of EIS.
PD IEC/TR 61857-2 enables the protection of materials through which electric current flows. With PD IEC/TR 61857-2 compliant testing, you can maintain EIS integrity and operational efficiency.
Overall, the guidelines of PD IEC/TR 61857-2 help you to select the most suitable evaluation methods for thermal testing of your electrical insulation system.
IEC TR 61857-2:2015